Recycling has been gaining prominence as a way of preserving natural resources, and the number of companies in the recycling business is increasing. However, there is no effective decision policy for recycling parts. Therefore, this study (1) selects products and models them to simulate the production activities in a recycling company with the help of a computer; (2) designs and analyzes some decision policies for disassembling used products that avoid excessive inventory and limit the use of new materials; and (3) proposes the most effective policy that decides the number of collected products to be disassembled and offsets the deficit with new parts. Finally, the authors proposes balances of the amount of disposes and total cost.